Under CII Version 20 the generated e-invoice might contain an empty InvoiceIssuerReference section #798
Description
Under CII version 20 using the extended profile, the generated e-invoice might contain an empty InvoiceIssuerReference section.
This generates a validation warning, because empty sections are not allowed.
This problem does not exists when writing with version 23.
I've fix it already be copying the code from version 23 to version 20.